Instil Bio, Inc.: which funds bought and sold

Institutions that bought and sold Instil Bio shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 10 institutions that filed 13F reports for both quarters added to or opened positions in Instil Bio, and 18 cut or closed them. Together they sold a net 23K shares, −1.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 28K shares (+12.1%); index fund managers were net sellers of 14K shares (−4.5%). 5 opened a new position and 10 sold out entirely.

Bought, Q2 2026 10 institutions, 5 of them new holders Sold, Q2 2026 18 institutions, 10 of them sold out

Net change, all compared −23K shares (−1.1%)

Net change, active managers +28K shares (+12.1%), 2 bought, 2 sold

Buyers versus sellers

institutions compared, 35

10 bought 7 18 sold

Active managers and hedge funds 2 bought · 2 sold · +28K

Index fund managers 2 bought · 3 sold · −14K

Other institutions 6 bought · 13 sold · −37K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
UBS Group AG	+171K +2681.8%	177K	$1.4M
Jacobs Levy Equity Management, Inc Active manager	+43K New position	43K	$331,062
Blackrock, Inc. Index funds	+3,486 +6.7%	56K	$426,826
Millennium Management LLC Hedge fund	+1,629 +1.2%	135K	$1M
Northwestern Mutual Wealth Management Co	+550 New position	550	$4,230
Vanguard Fiduciary Trust Co Index funds	+148 +0.7%	23K	$175,124
International Assets Investment Management, LLC	+125 New position	125	$961
Citigroup Inc	+88 New position	88	$677
Tower Research Capital LLC (TRC)	+32 New position	32	$246
LPL Financial LLC	+12 0.0%	32K	$246,653

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Jacobs Levy Equity Management, Inc Active manager	+43K New position	43K	$331,062
Millennium Management LLC Hedge fund	+1,629 +1.2%	135K	$1M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Kalehua Capital Management LLC	−124K −38.3%	199K	$1.5M
Xtx Topco Ltd	−26K Sold out	0	—
Jane Street Group, LLC	−12K Sold out	0	—
Vanguard Capital Management LLC Index funds	−11K −6.2%	164K	$1.3M
Prelude Capital Management, LLC	−10K Sold out	0	—
Fny Investment Advisers, LLC	−10K Sold out	0	—
Vazirani Asset Management LLC	−10K Sold out	0	—
Renaissance Technologies LLC Hedge fund	−8,800 −14.9%	50K	$386,807
Citadel Advisors LLC Hedge fund	−7,923 −20.5%	31K	$235,614
Morgan Stanley	−7,887 −39.8%	12K	$91,773
Geode Capital Management, LLC Index funds	−6,777 −13.8%	42K	$324,923
Dimensional Fund Advisors LP	−4,214 −21.1%	16K	$121,129
Barclays PLC	−4,106 −99.3%	29	$223
Bokf, Na	−454 Sold out	0	—
Rhumbline Advisers Index funds	−114 Sold out	0	—
Royal Bank Of Canada	−84 Sold out	0	—
Farther Finance Advisors, LLC	−70 Sold out	0	—
Fortitude Family Office, LLC	−64 Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	−8,800 −14.9%	50K	$386,807
Citadel Advisors LLC Hedge fund	−7,923 −20.5%	31K	$235,614

New positions

largest by value

Institution	Shares	Value June 30, 2026
Jacobs Levy Equity Management, IncActive manager	43K	$331,062
Northwestern Mutual Wealth Management Co	550	$4,230
International Assets Investment Management, LLC	125	$961
Citigroup Inc	88	$677
Tower Research Capital LLC (TRC)	32	$246

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Xtx Topco Ltd	26K	$216,234
Jane Street Group, LLC	12K	$94,901
Prelude Capital Management, LLC	10K	$84,872
Vazirani Asset Management LLC	10K	$82,400
Fny Investment Advisers, LLC	10K	$82,000
Bokf, Na	454	$3,741
Royal Bank Of Canada	84	$1,000
Rhumbline AdvisersIndex funds	114	$939
Farther Finance Advisors, LLC	70	$562
Fortitude Family Office, LLC	64	$527

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 25
Ten largest holders: 90.4%
Index fund managers: 15.1%
Active managers and hedge funds: 12.9%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	2	2	1	0	+28K	+12.1%
Index fund managers	2	3	0	1	−14K	−4.5%
Other institutions	6	13	4	9	−37K	−2.5%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Instil Bio.

Only managers that filed a holdings report for both quarters are compared (35 here). 1 other holder is left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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